[truckster]

Come to a complete stop (this includes spinning tires) before switching between 4HI and 4LO.

If you're a beginner, it's a good idea to use 2WD until you can't go anymore. Then shift to 4WD and hopefully you'll get yourself unstuck.

Advanced driving technique: Modulate the brake pedal to get more grip in 4WD when you're in slippery situations.

4WD will not help you stop on icy or snowy or wet roads. It may help you turn, but only very slightly.

Wear your seatbelt. The first time I went 4-wheeling many years ago I almost drove my spine through my skull. I learned very quickly the value of seatbelts when off-roading.